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我们生活在一个充满声音的世界,人们对于自然界的声音既熟悉又充满好奇。初中物理教材把《声现象》作为同学们接触物理世界的第一堂课,就是希望通过探索声音的秘密激发同学们学习物理的兴趣。《物理课程标准》对本章内容的要求是:(1)通过实验,认识声音产生和传播的条件。(2)了解乐音的特性。(3)了解现代技术中声学知识的一些应用。(4)知道噪声的危害和控制的方法。在这里给同学们梳理一下复习本章的思路,供大家参考。
We live in a world full of sounds. People are both familiar and curious about the voices of nature. The junior high school physics textbooks use the “Sound Phenomenon” as the first class for students to contact the physical world. They hope that by exploring the secrets of the sound, students will be encouraged to learn the physics interest. The requirements of the contents of this chapter in the Physics Curriculum Standards are: (1) To understand the conditions for sound production and propagation through experiments. (2) understand the characteristics of musical sounds. (3) Understand some applications of acoustic knowledge in modern technology. (4) Know the hazard of noise and the method of control. Here, students are sorted out the ideas for reviewing this chapter for your reference.